Fluid-Structure Interaction: TURNS
An interface between MBDyn
a URANS solver based on overset grids developed by Jay Sitaraman,
University of Wyoming,
has been developed.
The interface is based on MBDyn's libmbc
using the Python API.
For this purpose, the library has been entirely redesigned
and the Python (and C++) API has been developed, thanks to the support
of the School of Energy Resources (SER)
of the University of Wyoming.
The coupling actually consists in exploiting the features of libmbc
Python API and the external structural
and external structural mapping variants
of the force element to communicate the kinematics and the loads
between the two solvers.
Different approaches have been followed.
For beam-like structures, like helicopter and wind-turbine blades,
the external structural element is used
to communicate the motion of MBDyn's nodes; the motion
of the nodes is internally transformed in boundary grid deformation
by TURNS itself.
For more complex interfaces, like those resulting when shell
elements are used, the external structural mapping element
is used to directly communicate the motion of the boundary nodes
of the CFD mesh, internally mapped by MBDyn.
In this case, TURNS only needs to generate the deformed near-body mesh
based on the deformation of the boundary mesh.
P. Masarati, J. Sitaraman,
"Tightly Coupled CFD/Multibody Analysis of NREL Unsteady Aerodynamic Experiment Phase VI Rotor",
49th AIAA Aerospace Sciences Meeting, Orlando, Florida, 4-7 Jan 2011 (AIAA-2011-153).
Pierangelo Masarati returns
to Politecnico di Milano;
the stage is over, but the project and the cooperation continue.
The SER of University of Wyoming is duly acknowledged
for the support.
the abstract "Tightly Coupled CFD/Multibody Analysis of NREL Unsteady Aerodynamic Experiment Phase VI Rotor"
by P. Masarati and J. Sitaraman
is accepted for the 49th AIAA Aerospace Sciences Meeting,
4-7 January 2011.
- 2010-08-14: MBDyn 1.3.16 contains a pre-release
of libmbc (C and Python APIs);
the next release will contain an enhanced, fully featured version
of the library (C++ API and more).
Pierangelo Masarati moves
to University of Wyoming,
Laramie, WY, to start working at the project.
Points of contact are Mr. Luca Cavagna,
Dr. Giuseppe Quaranta,
and Dr. Pierangelo Masarati.
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